NSFW...depending on your work, of course.
Unless otherwise noted, I am not the original artist. Please, do not remove original artist credits or links when reposting. Credits are there for a reason. Please, give credit where credit is due.
Skull, by Clemens Behr
Maria-Menshikova - Queen Birch, 2012 Digital Arts
Agostino Arrivabene - Martyrium. 2011 Paintings: Oil on Linen